This page explains how Sanford Potiker (USATT# 9172)'s rating went from 1778 to 1770 at the 2004 Millcreek Open held on - 24 Oct 2004. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.